Sash balance



July 22, 1952 H. R. DlcKlNsoNinI SASH BALANCE Filed 001;. 27. 1947ATTORNEY.

Patented July 22, 1952 'STATE s PAT-ENT orties `saisir BALANCE v HenryRandel Dickinson III, Grand Rapids,

of Michigan First," 'to rprovide an 'improved 'sash balance rioi'cingelements for i, the frame' ofl the. sash. eoondytofprovide aniniprbvedsashjbalance ctur'e" including a rotating tubular"l membertrailinga "spiralV vtrack witnsupporting means greatlyrfacilitatngtheginounting of the balance uponf'afsa'sh while permitting adjustment.Third,v to provide an. 'improved mounting bracketforlsash balances.

Further objects relating;V to details and economies. of the inventionwill'appear Vfrom the vdc- 's cription'to follow. The invention isdefined and pointed out inthe claims. l

, Y A preferred embodiment of theV invention. is

illustratedV in the accompanying drawings, iny

Fig. l isY airagmentary view partially broken away and in verticalsection illustratingthe balance of my invention operatively associatedwith a window vsash and its frame.V v

. Fig..2 is, a`n enlarged fragn'ientaryY view in section onlineZ-Z inFig. j

A lig. 3. isla 'plan view of a blank from which onefof the brackets or"my invention is formed. Fig'. 4 is a fragmentary, topiview of a sash onwhichthe vbalance is mounted.

' ',Fig lB Iisa fragmentary view inv section correspoin'iing to line.5&5 of Fig. 1 showing thestrucvture of the second bracket.`

"Ref'e'rring tol the drawing,`` the reference nu- 'meralfldesignates a.window frame or 'casing in whichasash designated bythev numeral 2 ismounted, The sash 2con'rprises an upright or riser `sider'nember 3topmember 4 and bottom membertlie side memberj beingv provided Awith topand bottonimembers...

Thisfis' a conventionalsashfstructure but is described in View of thecoacting features of the brackets of my invention.` The sash is providedVwithagrooye 8 in one edge'adapted'to receive the sash balance. Theysash lbalance comprises a tubular element S having aspiral groove lconstituting -a track which is engaged by the follower lug Il of thetorsion member I3. f This torsion member slidably. vembraces the tubularmember and is providedwith a mounting arm I4, secured to the casing bymeans of the screw l5. At its lower end the tubular member 9 is providedwith a bushing lf3 secured thereto as by the screw I9. The lower bushingis provided whichmay be quickly? lmounted upon af. window with `ratchetteeth 20 'sion rod 2| is rotatably supported in the lower fsash., thesupporting "brackets" constituting reniorti's'es' '6. 'at its endsreceiving tongues .1, on the Mich., lassignor to GrandyRapids.'I-Iardware Company, Grand. Rapids,

Mich., a corporation Y[application Octoberj, 1947,Serial No. 782,445 Y'z claims. (01.16f197) at its inner end. The tenbushing and providedwith a ratchet vhead coactingwith the teeth.` The lower end-of the coilspring 23 arranged within the tubular element is in 'clutchingengagement with the inner end of the tension rod. The rupper end of thelspring 'is in clutching engagement with the inner end of the anchoringrod24, vwhich is -arranged through the bushingl and'constitutes'ajournal for the tubular member.

The-anchoring rod'- or journal member 24 is provided with af flattenedeye 25freceiving'the ypivot pinf'26 passed through the ears 21 of thebracket 258. This bracket 2S is formed as a sheet metal stamping, theVears being turned downwardly therefrom, the bracket comprising a headportion 29 and a tapered prong' 30A adapted to `bedriven intoA the sashdowel.` This prong-.is of v'considerable length and of considerablewidth *atfitsv basel and has outwardly facing teethl 3| on its edges. yAreinforcin'grib 32 `is struck up 'fon-'the prongl to extend inwardlyfrom the head, 'reinforcing the vprong at ythe point where it is subjectto bending stress particularly lwhile being driven;V The ears 2"!Vconstitute-stops limiting the -n irivingfofthe prong into the sash. Thebottom bracket- 33' is 'the same as thatA described-With the exceptionthat.instead'of-forming the :head 34' o the bracket'withVearslitfisprovided with a bearing opening 35 receiving 'the end of thevbushing i8 which projects slightly from the 'tubular member, afs shownin Fig. l;- thefoute'r end ofthe tension rod is-slotted at 36 toreceiveani adjusting tool `for tensioning the spring.

' "lt will be noted that the prongs ofthe brackets are driven 'into'thetongues 'l' oi the top and bottom sashV members and that the edges o fthe prongs engage the side edges of themortis'es as is indicated in Fig.4. The prongs thus serve to anchor thetongues so they cannot pullout ofthe imortises.

* 3 skilled in the art to embody or adapt my invention as may bedesired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

4 relation to the anchoring rod and tubular member.

4. A sash balance including a tubular element having a spiral track, atorsion member coacting with said track, a journal member for one end ofsaid tubular element, ak coiled spring arranged within said tubularelement and connected thereto at one end and to said journal member atits other end, and mounting brackets for said tubuand sash side member,the prongs being provided with outwardly facing teeth on their sideAedges, the prongs being drivenfinto the sash interlock- Yingly engagedthe tongues of the top and bottom sash members, and the sides of themortises receiving thersame, the head of the upper bracket havingdownturned ears disposed parallel tosaid sash engaging stops, the end ofthe journal member ybeing disposed between and pivotally connected tosaid ears, said ears and the pivotal connection of the journal memberthereto retaining `rotatable elongated Ymember and constituting saidjournal member against axial rotationwwhereby the assembly is swingablymounted on the upper bracket, the prongs of the brackets havinglongitudinal ribs extending from the heads thereof, the head' of thelowerbracket being provided with a bearingopeningforltheh; -lower end ofthe rotatable elongated member, I and a torsion member coacting withsaid track.`

2. In a sash balance the combination withva Vsash Yc omprising a sidemember having mortised ends, and top and bottom members having tongues 5f disposed in the mortises, of a rotatable elongated member having aspiral track, a journal member for one end of said rotatable elongatedmember and attaching brackets comprising heads and integral taperedblade like prong portions having toothed edges, the blade-like prongportions be- ,ingdisposed with the planes thereof substantially atrightiangles to the lengths of said rotatable velongated member, theprongs being driven into the sash interlockingly engaging the tongues ofI the top andbottom sash members, and the sides of the mortisesreceiving the same, the journal member being non-rotatably connected toone bracket, the other-bracket being provided with a bearing opening forthe other end of the rotatable elongated member, the prongs of thebrackets being disposed to be driven into the tongues vof the sashmembers when the brackets areA in assembled relation to `the anchoringrod and tubular member. t .j

3. In a sash balance the combination of a rotatable elongated memberhaving a spiral track, a journal member for one end'of said rotatableelongated member and attaching brackets comprising head and integraltapered bladelike prong portions having toothed edges, the blade-likeprong portions being disposed with the planes thereof substantially' atright angles to theflengths of said rotatable elongated member, thejournal member being non-rotatably con- 27'0 e nected to one bracket,the other bracket being provided with a bearing opening for thefotherend of the rotatable elongated member, the

prongs ofthe brackets being disposed to be' driven into af sash when thebrackets'are in assembled Number lar element, one bracket having earsprojecting therefrom in the direction of the length of the vtubularelement, said journal member having one end thereof disposed between andpivotally connected to said ears for lateral swinging movement of thetubular element, said ears and the pivotal connection of the journalmember thereto retaining said journal member against axial rotation, theother constituting a bearing for rotatably supporting the other end ofthe tubular member, said brackets having integral pointed blade liketoothed prongs of substantial length and width adapted to be drivenintothe part on which rthe tubular element is mounted. .e .A sash balance,comprising a tubular element having a spiral track and a coactingtorsion member, a journal member at one end of said tubular member, andmounting brackets for said tubular member, vsaid journal member beingnon- 'rotatably engaged with one bracket, the other endlof the, tubularmember being rotatably sup- 'ported by the other bracket, said bracketscomprising head members and pointed blade-like driving prongs ofsubstantial width and length adapted to be driven into the part in whichthe tubular element is mounted and having serrated edges, the blade-likeprongs being disposed with the planes thereof substantially at rightangles to the length of the tubular element.

6. An attaching bracket for a sash balance formed of sheet metal andcomprising integral head and drive prong portions, said portions beingflat and disposed generally in a common plane, the prong portion beingtapered and having 'serrated edges, the head having an opening thereinfor receiving a part of the balance to be supported,'there being areinforcing rib extending across the merging zone of the head and prong,said rib being struck from the body of the bracket.

'7. An attaching bracket for a sash balance Aformed of sheet metal andcomprising a head portion and a blade-like prong portion integral withsaid head portion, said head and prong portions being disposed generallyin a common plane, the prong portion being tapered and having serratededges and constituting means to bedriven into a sash, the head portionhaving a pairof spaced ears integral therewith and projecting` therefromat substantially right angles to the general plane of the bracket, saidears having aligned openings for receiving a pivot pin for 'pivotallysupporting a part of a sash balance,

constituting sash Vengaging stops. I-IENRY-RANDELDICKINSON III.

REFERENCES CITED The following references are of record in the iile lofthis patent:

UNITED sTATEs PATENTS Name Date 2,370,867 Luce i Mar. 6, 1945 2,384,980AViehweger Sept. 18, 194 FOREIGN PATENTS z vNumber Country', Date V113,819 Great Britain Mar. 4, 1918

